[Bug #1305](Closed) target_os $B$,(B darwin $B7O$N>l9g$KF0E*%j%s%/IT2DG=$J<B9T7A<0$,@8@.$5$l$k>l

e$B%A%1%C%He(B #1305 e$B$,99?7$5$l$^$7$?!#e(B (by Nobuyoshi N.)

e$B%9%F!<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B
e$B?JD=e(B % 0e$B$+$ie(B100e$B$KJQ99e(B

Applied in changeset r23014.

http://redmine.ruby-lang.org/issues/show/1305